It's exhilarating, isn't it, feeling superior, right? It IS the information age after all, so I begrudge you none.
Look, it doesn't get more exciting than knowing more about people than they know of themselves - I guess it's as close to feeling like God that some of us may be permitted. So bask in it, baby, bask, and smile condescendingly, running your finger along the rim of your wineglass as you smirk, saying 'you're a Scorpio, right? Oh, and an INTJ too! I begin to understand your fashion choice - and, oh, of course, you find small talk annoying? How utterly INTJ of you!'